Download Bill Nye - Genetics (worksheet)

Name: _______________________________________
Date: __________
Period: ____
Greatest Discoveries with Bill Nye: Genetics
1) In Mendel’s experiments, what percentage of plants showed the “hidden” characteristic in the
second generation?
2) Mendelian genetics is used to refer to a single gene that does what?
3) What were some advantages Morgan experienced using flies (drosophila) for his
experiments?
4) Morgan proved that genes are found in a _____________ order in the chromosomes.
5) What did irradiating (exposing them to x-rays) do to the genes of the bread mold?
6) The Beadle and Tatum breakthrough was the “one gene, one _______________” hypothesis.
7) According to McClintock, a break in the chromosome occurs when a gene randomly jumped,
or ___________________, from one chromosome to another. This can affect the phenotype
of that gene.
8) Hershey and Chase wanted to know if it was the ___________ or the _____________ that
carried the genetic information.
9) The four bases or DNA are: ________________, ________________, _________________,
and _________________.
10) Without whose knowledge did Watson and Crick use the x-ray image to complete their DNA
model?
11) Rosalind Franklin died of ovarian cancer, most likely due to exposure to _______________.
12) Scientists found that cells with lots of protein production had a lot of ____________.
13) The order of the triples of nucleotide bases (also known as codon) is the blueprint for the
production of _______________.
14) Because all living things have the same DNA and RNA letters, Nuremberg understand that
all living things derive from a _____________________________________.
15) Restriction enzymes are like “molecular scissors” that cut _______ molecules.
16) Through alternative splicing, some genes are able to code for more than one _____________.
17) DNA fingerprinting compares the segments of minisatellite DNA (short repeated segments).
How did Jeffries prove that the boy was the woman’s son?
18) How many genes does the human genome code for?
19) Most _________________ share the same order/sets of genes.
20) Those studying the human genome already know about the presence of genes, but not the
___________________ of those genes.